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Tech Fact
A JavaScript function is a section of code created to carry out a
certain task.
Let’s see another interesting example where we change the background colour on the click of a
button!
<html>
<head> <title> EVENT HANDLING </title>
<script>
function changeColor() {
document.body.style.background = 'red';
}
</script></head>
<body bgcolor="blue">
<p> WELCOME </p>
<input type="button" onclick="changeColor()" value="Red">
</body> </html>
Let’s Back-uP
• An event is defined as a change in an object's state.
• The act of responding to events is known as event handling.
• JavaScript uses event handlers to handle HTML events.
• You can attach an event handler to an event to respond to it. This is a section of code that
executes when the event occurs.
• Using an HTML attribute with the name of the event handler allows you to add an event
handler to an event connected to an HTML element.
• A function specified in a script can be called by an event handler defined in HTML.
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